52821253 has 4 divisors (see below), whose sum is σ = 53365900. Its totient is φ = 52276608.

The previous prime is 52821239. The next prime is 52821257. The reversal of 52821253 is 35212825.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29953729 + 22867524 = 5473^2 + 4782^2 .

It is a cyclic number.

It is not a de Polignac number, because 52821253 - 2⁵ = 52821221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52821257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272178 + ... + 272371.

It is an arithmetic number, because the mean of its divisors is an integer number (13341475).

Almost surely, 2^52821253 is an apocalyptic number.

It is an amenable number.

52821253 is a deficient number, since it is larger than the sum of its proper divisors (544647).

52821253 is an equidigital number, since it uses as much as digits as its factorization.

52821253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544646.

The product of its digits is 4800, while the sum is 28.

The square root of 52821253 is about 7267.8231266315. The cubic root of 52821253 is about 375.2058200513.

The spelling of 52821253 in words is "fifty-two million, eight hundred twenty-one thousand, two hundred fifty-three".